Sodium Alginate Decorated Carbon Nanotubes-Graphene Composite Aerogel for Heavy Metal Ions Detection

Wang, Dafu; Zhang, Feifei; Tang, Jie

doi:10.5796/electrochemistry.83.84

Cited by 28 publications

(8 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If CNTs can be added to GA, CNTs and graphene can play a synergistic role through their π–π bonds [ 20 ]. Large layers of graphene are curled, deformed, stacked up, and then overlap to form a frame structure.…”

Section: Introductionmentioning

confidence: 99%

Ultralight Graphene/Carbon Nanotubes Aerogels with Compressibility and Oil Absorption Properties

Zhao

2018

Materials

View full text Add to dashboard Cite

Graphene aerogels have many advantages, such as low density, high elasticity and strong adsorption. They are considered to be widely applicable in many fields. At present, the most valuable research area aims to find a convenient and effective way to prepare graphene aerogels with excellent properties. In this work graphene/carbon nanotube aerogels are prepared through hydrothermal reduction, freeze-drying and high temperature heat treatment with the blending of graphene oxide and carbon nanotubes. A new reducing agent-ascorbic acid is selected to explore the best preparation process. The prepared aerogels have compression and resilience and oil absorption properties due to the addition of carbon nanotubes as designed.

show abstract

Section: Introductionmentioning

confidence: 99%

Ultralight Graphene/Carbon Nanotubes Aerogels with Compressibility and Oil Absorption Properties

Zhao

2018

Materials

View full text Add to dashboard Cite

show abstract

“…High‐performance sensors for monitoring water quality, detecting explosives and sensing temperature, etc., are imperative to be developed, where the aerogel‐based materials have been widely used. Li et al proposed a novel strategy for the preparation of activated N‐doped graphene aerogel and used it to support Au nanoparticles to get an Au/graphene aerogel composite.…”

Section: Aerogel‐based Sensorsmentioning

confidence: 99%

“…When for the detection of hydroquinone and o ‐dihydroxybenzene, the composite electrode possessed linear response ranges from 5.0 × 10 −8 to 1.8 × 10 −4 and 1 × 10 −8 to 2.0 × 10 −4 m , and low detection limits of 1.5 × 10 −8 and 3.3 × 10 −9 m , respectively. Tang and co‐workers combined graphene and single‐walled CNTs with sodium alginate by the hydrothermal method, and obtained the resultant composite aerogels. The sodium alginate decorated CNTs were intercalated into graphene to avoid the serious aggregation of graphene, resulting in more active sites and reactive surface area.…”

Section: Aerogel‐based Sensorsmentioning

confidence: 99%

Versatile Aerogels for Sensors

Yang

Zheng

et al. 2019

Small

119

View full text Add to dashboard Cite

Aerogels are unique solid‐state materials composed of interconnected 3D solid networks and a large number of air‐filled pores. They extend the structural characteristics as well as physicochemical properties of nanoscale building blocks to macroscale, and integrate typical characteristics of aerogels, such as high porosity, large surface area, and low density, with specific properties of the various constituents. These features endow aerogels with high sensitivity, high selectivity, and fast response and recovery for sensing materials in sensors such as gas sensors, biosensors and strain and pressure sensors, among others. Considerable research efforts in recent years have been devoted to the development of aerogel‐based sensors and encouraging accomplishments have been achieved. Herein, groundbreaking advances in the preparation, classification, and physicochemical properties of aerogels and their sensing applications are presented. Moreover, the current challenges and some perspectives for the development of high‐performance aerogel‐based sensors are summarized.

show abstract

“…Because of its large surface area, excellent conductivity, and chemical inertness, carbon-based nanomaterials, such as carbon nanotubes (CNTs) and graphene, have been regarded as good candidates for functionalizing the electrode surface, showing a lower detection limit and a wider linear range towards the target analytes [ 23 ]. Carbon nanotubes have been given the most consideration by scientists owing to their special texture, excellent electron conductivity, and physicochemical characteristics [ 16 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

A Facile Electrochemical Sensor Based on PyTS–CNTs for Simultaneous Determination of Cadmium and Lead Ions

Jiang

Liu

Gao

et al. 2018

Sensors

View full text Add to dashboard Cite

A simple and easy method was implemented for the contemporary detection of cadmium (Cd2+) and lead (Pb2+) ions using 1,3,6,8-pyrenetetrasulfonic acid sodium salt-functionalized carbon nanotubes nanocomposites (PyTS–CNTs). The morphology and composition of the obtained PyTS–CNTs were characterized using scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), and X-ray photoelectron spectroscopy (XPS). The experimental results confirmed that the fabricated PyTS–CNTs exhibited good selectivity and sensitivity for metal ion-sensing owing to the insertion of sulfonic acid groups. For Cd2+ and Pb2+, some of the electrochemical sensing parameters were evaluated by varying data such as the PyTS–CNT quantity loaded on the pyrolytic graphite electrode (PGE), pH of the acetate buffer, deposition time, and deposition potential. These parameters were optimized with differential pulse anodic sweeping voltammetry (DPASV). Under the optimal condition, the stripping peak current of the PyTS–CNTs/Nafion/PGE varies linearly with the heavy metal ion concentration, ranging from 1.0 μg L−1 to 90 μg L−1 for Cd2+ and from 1.0 μg L−1 to 110 μg L−1 for Pb2+. The limits of detection were estimated to be approximately 0.8 μg L−1 for Cd2+ and 0.02 μg L−1 for Pb2+. The proposed PyTS–CNTs/Nafion/PGE can be used as a rapid, simple, and controllable electrochemical sensor for the determination of toxic Cd2+ and Pb2+.

show abstract

Sodium Alginate Decorated Carbon Nanotubes-Graphene Composite Aerogel for Heavy Metal Ions Detection

Cited by 28 publications

References 38 publications

Ultralight Graphene/Carbon Nanotubes Aerogels with Compressibility and Oil Absorption Properties

Ultralight Graphene/Carbon Nanotubes Aerogels with Compressibility and Oil Absorption Properties

Versatile Aerogels for Sensors

A Facile Electrochemical Sensor Based on PyTS–CNTs for Simultaneous Determination of Cadmium and Lead Ions

Contact Info

Product

Resources

About